download_strategy: add comment about Content-Disposition handling
download_strategy: add comment about Content-Disposition handling

claui/brew,JCount/brew,Homebrew/brew,Homebrew/brew,sjackman/homebrew,nandub/brew,claui/brew,Homebrew/brew,MikeMcQuaid/brew,sjackman/homebrew,claui/brew,nandub/brew,claui/brew,vitorgalvao/brew,EricFromCanada/brew,Homebrew/brew,JCount/brew,JCount/brew,vitorgalvao/brew,EricFromCanada/brew,nandub/brew,vitorgalvao/brew,MikeMcQuaid/brew,nandub/brew,MikeMcQuaid/brew,sjackman/homebrew,vitorgalvao/brew,MikeMcQuaid/brew,sjackman/homebrew,EricFromCanada/brew,JCount/brew,EricFromCanada/brew